tx · 3o1zMgN5rzALCFz58ngAbGpCFJCtVoRU1FzDdCCEjxWH

3N34x67KgytTnPx5erPmhz1FD8nwAChtAsb:  -0.01400000 Waves

2020.10.22 21:31 [1232146] smart account 3N34x67KgytTnPx5erPmhz1FD8nwAChtAsb > SELF 0.00000000 Waves

{
    "type": 13,
    "id": "3o1zMgN5rzALCFz58ngAbGpCFJCtVoRU1FzDdCCEjxWH",
    "fee": 1400000,
    "feeAssetId": null,
    "timestamp": 1603391551192,
    "version": 1,
    "sender": "3N34x67KgytTnPx5erPmhz1FD8nwAChtAsb",
    "senderPublicKey": "Ak3LEdYk7Nk1Z88WXht4DxTQRZsK6dYL5kZ4CjrXSQBu",
    "proofs": [
        "3hv8RLnE52x1Qv5RTftkGQQjfagwP1tJvu1NTGEw5YQx7nJH6Mpfe36PrvaNeKVJTZoVQVMLc7h64SHMffUg2d37"
    ],
    "script": 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",
    "chainId": 84,
    "height": 1232146,
    "applicationStatus": "succeeded",
    "spentComplexity": 0
}

View: original | compacted
Prev: AaN9zgsmfWemEe6dVPmDQDeSnmJEokExE2o5PHn2uPBu
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Diff: 
Old
New
Differences
5
5
 
6
6
 
let IdTokenB = getStringValue(this, "assetIdTokenB")
7
7
 
8
-
let amountTokenB = getIntegerValue(this, "amountTokenB")
8
+
let IdTokenShare = getStringValue(this, "share_token_id")
9
9
 
10
-
let amountTokenA = getIntegerValue(this, "amountTokenA")
10
+
let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
11
11
 
12
-
let assetIdTokenShare = getBinaryValue(this, "share_token_id")
12
+
let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
13
13
 
14
14
 
let tokenShareSupply = getIntegerValue(this, "share_token_supply")
15
15
 
16
-
let comission = 500
16
+
let comission = 0
17
17
 
18
-
let comissionScaleDelimiter = 1000000
18
+
let comissionScaleDelimiter = 10000
19
19
 
20
-
let version = "1.0.0"
20
+
let version = "2.0.0"
21
+
22
+
let invariant = getIntegerValue(this, "invariant")
21
23
 
22
24
 
let scaleValue8 = 100000000
25
+
26
+
let scaleValue8Digits = 8
27
+
28
+
let scaleValue12 = 1000000000000
23
29
 
24
30
 
let ratioThresholdMax = 100000000
25
31
 
26
32
 
let ratioThresholdMin = 99999000
27
33
 
28
-
let scaleValue8Digits = 8
34
+
let alpha = 50
35
+
36
+
let alphaDigits = 2
37
+
38
+
let betta = 46
39
+
40
+
let bettaDigits = 2
41
+
42
+
func skeweness (x,y) = ((fraction(scaleValue8, x, y) + fraction(scaleValue8, y, x)) / 2)
43
+
44
+
45
+
func invariantCalc (x,y) = {
46
+
    let sk = skeweness(x, y)
47
+
    (fraction((x + y), pow(sk, scaleValue8Digits, -(alpha), alphaDigits, 8, HALFDOWN), scaleValue8) + (2 * fraction(fraction(pow(x, 0, 5, 1, scaleValue8Digits, HALFDOWN), pow(y, 0, 5, 1, scaleValue8Digits, HALFDOWN), (scaleValue8 * scaleValue8)), pow((sk - ((betta * scaleValue8) / 100)), 0, alpha, alphaDigits, scaleValue8Digits, HALFDOWN), scaleValue12)))
48
+
    }
49
+
29
50
 
30
51
 
func assetId (asset) = if ((asset == "WAVES"))
31
52
 
    then unit
32
53
 
    else fromBase58String(asset)
33
54
 
34
55
 
56
+
func calculateHowManySendTokenA (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
57
+
    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
58
+
    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA - amountToSendEstimated), (amountTokenB + tokenReceiveAmount)))
59
+
    if (if ((invariantEstimatedRatio > slippageValue))
60
+
        then (scaleValue8 > invariantEstimatedRatio)
61
+
        else false)
62
+
        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
63
+
        else throw("price has changed dramatically. err2")
64
+
    }
65
+
66
+
67
+
func calculateHowManySendTokenB (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
68
+
    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
69
+
    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - amountToSendEstimated)))
70
+
    if (if ((invariantEstimatedRatio > slippageValue))
71
+
        then (scaleValue8 > invariantEstimatedRatio)
72
+
        else false)
73
+
        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
74
+
        else throw("price has changed dramatically. err2")
75
+
    }
76
+
77
+
35
78
 
let assetIdTokenA = assetId(IdTokenA)
36
79
 
37
80
 
let assetIdTokenB = assetId(IdTokenB)
81
+
82
+
let assetIdTokenShare = fromBase58String(IdTokenShare)
38
83
 
39
84
 
@Callable(contextObj)
40
85
 
func fund () = {
83
128
 
                case _ => 
84
129
 
                    throw("Match error")
85
130
 
            }
86
-
[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), BinaryEntry("share_token_id", shareTokenAssetId), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
131
+
            let invariantCalcualated = invariantCalc(tokenReceiveAmountA, tokenReceiveAmountB)
132
+
[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("invariant", invariantCalcualated), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), StringEntry("share_token_id", toBase58String(shareTokenAssetId)), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
87
133
 
            }
88
134
 
    }
89
135
 
90
136
 
91
137
 
92
138
 
@Callable(contextObj)
93
-
func replenishment () = {
139
+
func replenishmentWithTwoToken () = {
94
140
 
    let paymentA = value(contextObj.payments[0])
95
141
 
    let paymentB = value(contextObj.payments[1])
96
142
 
    let assetIdReceivedA = paymentA.assetId
97
143
 
    let tokenReceiveAmountA = paymentA.amount
98
144
 
    let assetIdReceivedB = paymentB.assetId
99
145
 
    let tokenReceiveAmountB = paymentB.amount
100
-
    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
101
-
    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
146
+
    let invariantCalcualated = invariantCalc((dAppTokensAmountA + tokenReceiveAmountA), (dAppTokensAmountB + tokenReceiveAmountB))
102
147
 
    if (if ((assetIdReceivedA != assetIdTokenA))
103
148
 
        then true
104
149
 
        else (assetIdReceivedB != assetIdTokenB))
105
150
 
        then throw("incorrect assets")
106
151
 
        else {
107
-
            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 100000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
108
-
            if (!(if ((tokenRatio > 99990))
109
-
                then (100010 > tokenRatio)
152
+
            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 1000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
153
+
            if (!(if ((tokenRatio > 990))
154
+
                then (1010 > tokenRatio)
110
155
 
                else false))
111
156
 
                then throw("incorrect assets amount")
112
157
 
                else {
113
158
 
                    let shareTokenToPayAmount = fraction(tokenReceiveAmountA, tokenShareSupply, dAppTokensAmountA)
114
159
 
                    if ((shareTokenToPayAmount == 0))
115
160
 
                        then throw("you try replansish with very small amount")
116
-
                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB))]
161
+
                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB)), IntegerEntry("invariant", invariantCalcualated)]
117
162
 
                    }
118
163
 
            }
119
164
 
    }
121
166
 
122
167
 
123
168
 
@Callable(contextObj)
124
-
func replanishmentWithOneToken () = {
169
+
func replanishmentWithOneToken (tokenAamountWithOldInvariantNewPrice,tokenBamountWithOldInvariantNewPrice) = {
125
170
 
    let payment = value(contextObj.payments[0])
126
171
 
    let assetIdReceived = payment.assetId
127
172
 
    let tokenReceiveAmount = payment.amount
128
173
 
    if ((assetIdReceived == assetIdTokenA))
129
174
 
        then {
130
-
            let newAmountTokenA = (amountTokenA + tokenReceiveAmount)
131
-
            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, amountTokenB)
132
-
            let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
133
-
            let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
134
-
            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
135
-
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA)]
175
+
            let newAmountTokenA = (dAppTokensAmountA + tokenReceiveAmount)
176
+
            let newInvariant = invariantCalc(newAmountTokenA, dAppTokensAmountB)
177
+
            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, dAppTokensAmountB)
178
+
            let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
179
+
            if (if ((isCorrectPriceRation > ratioThresholdMax))
180
+
                then true
181
+
                else (ratioThresholdMin > isCorrectPriceRation))
182
+
                then throw("incorrect function args: price")
183
+
                else {
184
+
                    let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
185
+
                    let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
186
+
                    if (if ((isCorrectInvariantRation > ratioThresholdMax))
187
+
                        then true
188
+
                        else (ratioThresholdMin > isCorrectInvariantRation))
189
+
                        then throw("incorrect function args: invariant")
190
+
                        else {
191
+
                            let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
192
+
                            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
193
+
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA), IntegerEntry("invariant", newInvariant)]
194
+
                            }
195
+
                    }
136
196
 
            }
137
197
 
        else if ((assetIdReceived == assetIdTokenB))
138
198
 
            then {
139
-
                let newAmountTokenB = (amountTokenB + tokenReceiveAmount)
140
-
                let priceAtoBwith8digits = fraction(amountTokenA, scaleValue8, newAmountTokenB)
141
-
                let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
142
-
                let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
143
-
                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
144
-
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB)]
199
+
                let newAmountTokenB = (dAppTokensAmountB + tokenReceiveAmount)
200
+
                let newInvariant = invariantCalc(dAppTokensAmountA, newAmountTokenB)
201
+
                let priceAtoBwith8digits = fraction(dAppTokensAmountA, scaleValue8, newAmountTokenB)
202
+
                let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
203
+
                if (if ((isCorrectPriceRation > ratioThresholdMax))
204
+
                    then true
205
+
                    else (ratioThresholdMin > isCorrectPriceRation))
206
+
                    then throw("incorrect function args: price")
207
+
                    else {
208
+
                        let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
209
+
                        let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
210
+
                        if (if ((isCorrectInvariantRation > ratioThresholdMax))
211
+
                            then true
212
+
                            else (ratioThresholdMin > isCorrectInvariantRation))
213
+
                            then throw("incorrect function args: invariant")
214
+
                            else {
215
+
                                let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
216
+
                                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
217
+
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB), IntegerEntry("invariant", newInvariant)]
218
+
                                }
219
+
                        }
145
220
 
                }
146
221
 
            else throw("incorrect assets in payment")
147
222
 
    }
150
225
 
151
226
 
@Callable(contextObj)
152
227
 
func withdraw () = {
153
-
    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
154
-
    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
155
228
 
    let payment = value(contextObj.payments[0])
156
229
 
    let assetIdReceived = payment.assetId
157
230
 
    let tokenReceiveAmount = payment.amount
160
233
 
        else {
161
234
 
            let tokensToPayA = fraction(tokenReceiveAmount, dAppTokensAmountA, tokenShareSupply)
162
235
 
            let tokensToPayB = fraction(tokenReceiveAmount, dAppTokensAmountB, tokenShareSupply)
163
-
[ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), Burn(assetIdTokenShare, tokenReceiveAmount)]
236
+
            let invariantCalcualated = invariantCalc((dAppTokensAmountA - tokensToPayA), (dAppTokensAmountB - tokensToPayB))
237
+
[IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), Burn(assetIdTokenShare, tokenReceiveAmount), IntegerEntry("invariant", invariantCalcualated)]
164
238
 
            }
165
239
 
    }
166
240
 
167
241
 
168
242
 
169
243
 
@Callable(contextObj)
170
-
func exchanger (minTokenRecieve) = {
244
+
func exchanger (amountToSendEstimated,minTokenRecieveAmount) = {
245
+
    let amountTokenB = getIntegerValue(this, "amountTokenB")
246
+
    let amountTokenA = getIntegerValue(this, "amountTokenA")
171
247
 
    let payment = value(contextObj.payments[0])
172
248
 
    let assetIdReceived = payment.assetId
173
249
 
    let tokenReceiveAmount = payment.amount
174
-
    let count = value(getInteger(this, "exchange_count"))
250
+
    let count =     match getInteger(this, "exchange_count") {
251
+
        case i: Int => 
252
+
            (value(getInteger(this, "exchange_count")) + i)
253
+
        case _ => 
254
+
            0
255
+
    }
175
256
 
    if ((assetIdReceived == assetIdTokenB))
176
257
 
        then {
177
-
            let tokenSendAmount = ((fraction(amountTokenA, tokenReceiveAmount, (tokenReceiveAmount + amountTokenB)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
178
-
            if ((minTokenRecieve > tokenSendAmount))
179
-
                then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
180
-
                else {
181
-
                    let assetIdSent = assetIdTokenA
182
-
[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
183
-
                    }
258
+
            let tokenSendAmount = calculateHowManySendTokenA(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
259
+
            let assetIdSent = assetIdTokenA
260
+
[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA - tokenSendAmount), (amountTokenB + tokenReceiveAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
184
261
 
            }
185
262
 
        else if ((assetIdReceived == assetIdTokenA))
186
263
 
            then {
187
-
                let tokenSendAmount = ((fraction(amountTokenB, tokenReceiveAmount, (tokenReceiveAmount + amountTokenA)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
188
-
                if ((minTokenRecieve > tokenSendAmount))
189
-
                    then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
190
-
                    else {
191
-
                        let assetIdSent = assetIdTokenB
192
-
[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
193
-
                        }
264
+
                let tokenSendAmount = calculateHowManySendTokenB(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
265
+
                let assetIdSent = assetIdTokenB
266
+
[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - tokenSendAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
194
267
 
                }
195
268
 
            else throw("Asset is not allowed")
196
269
 
    }
Full: 
Old
New
Differences
1
1
 
{-# STDLIB_VERSION 4 #-}
2
2
 
{-# SCRIPT_TYPE ACCOUNT #-}
3
3
 
{-# CONTENT_TYPE DAPP #-}
4
4
 
let IdTokenA = getStringValue(this, "assetIdTokenA")
5
5
 
6
6
 
let IdTokenB = getStringValue(this, "assetIdTokenB")
7
7
 
8
-
let amountTokenB = getIntegerValue(this, "amountTokenB")
8
+
let IdTokenShare = getStringValue(this, "share_token_id")
9
9
 
10
-
let amountTokenA = getIntegerValue(this, "amountTokenA")
10
+
let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
11
11
 
12
-
let assetIdTokenShare = getBinaryValue(this, "share_token_id")
12
+
let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
13
13
 
14
14
 
let tokenShareSupply = getIntegerValue(this, "share_token_supply")
15
15
 
16
-
let comission = 500
16
+
let comission = 0
17
17
 
18
-
let comissionScaleDelimiter = 1000000
18
+
let comissionScaleDelimiter = 10000
19
19
 
20
-
let version = "1.0.0"
20
+
let version = "2.0.0"
21
+
22
+
let invariant = getIntegerValue(this, "invariant")
21
23
 
22
24
 
let scaleValue8 = 100000000
25
+
26
+
let scaleValue8Digits = 8
27
+
28
+
let scaleValue12 = 1000000000000
23
29
 
24
30
 
let ratioThresholdMax = 100000000
25
31
 
26
32
 
let ratioThresholdMin = 99999000
27
33
 
28
-
let scaleValue8Digits = 8
34
+
let alpha = 50
35
+
36
+
let alphaDigits = 2
37
+
38
+
let betta = 46
39
+
40
+
let bettaDigits = 2
41
+
42
+
func skeweness (x,y) = ((fraction(scaleValue8, x, y) + fraction(scaleValue8, y, x)) / 2)
43
+
44
+
45
+
func invariantCalc (x,y) = {
46
+
    let sk = skeweness(x, y)
47
+
    (fraction((x + y), pow(sk, scaleValue8Digits, -(alpha), alphaDigits, 8, HALFDOWN), scaleValue8) + (2 * fraction(fraction(pow(x, 0, 5, 1, scaleValue8Digits, HALFDOWN), pow(y, 0, 5, 1, scaleValue8Digits, HALFDOWN), (scaleValue8 * scaleValue8)), pow((sk - ((betta * scaleValue8) / 100)), 0, alpha, alphaDigits, scaleValue8Digits, HALFDOWN), scaleValue12)))
48
+
    }
49
+
29
50
 
30
51
 
func assetId (asset) = if ((asset == "WAVES"))
31
52
 
    then unit
32
53
 
    else fromBase58String(asset)
33
54
 
34
55
 
56
+
func calculateHowManySendTokenA (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
57
+
    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
58
+
    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA - amountToSendEstimated), (amountTokenB + tokenReceiveAmount)))
59
+
    if (if ((invariantEstimatedRatio > slippageValue))
60
+
        then (scaleValue8 > invariantEstimatedRatio)
61
+
        else false)
62
+
        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
63
+
        else throw("price has changed dramatically. err2")
64
+
    }
65
+
66
+
67
+
func calculateHowManySendTokenB (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
68
+
    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
69
+
    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - amountToSendEstimated)))
70
+
    if (if ((invariantEstimatedRatio > slippageValue))
71
+
        then (scaleValue8 > invariantEstimatedRatio)
72
+
        else false)
73
+
        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
74
+
        else throw("price has changed dramatically. err2")
75
+
    }
76
+
77
+
35
78
 
let assetIdTokenA = assetId(IdTokenA)
36
79
 
37
80
 
let assetIdTokenB = assetId(IdTokenB)
81
+
82
+
let assetIdTokenShare = fromBase58String(IdTokenShare)
38
83
 
39
84
 
@Callable(contextObj)
40
85
 
func fund () = {
41
86
 
    let paymentA = value(contextObj.payments[0])
42
87
 
    let paymentB = value(contextObj.payments[1])
43
88
 
    let assetIdReceivedA = paymentA.assetId
44
89
 
    let tokenReceiveAmountA = paymentA.amount
45
90
 
    let assetIdReceivedB = paymentB.assetId
46
91
 
    let tokenReceiveAmountB = paymentB.amount
47
92
 
    let digitTokenA =     match assetIdReceivedA {
48
93
 
        case p: Unit => 
49
94
 
            8
50
95
 
        case p: ByteVector => 
51
96
 
            value(assetInfo(p)).decimals
52
97
 
        case _ => 
53
98
 
            throw("Match error")
54
99
 
    }
55
100
 
    let digitTokenB =     match assetIdReceivedB {
56
101
 
        case p: Unit => 
57
102
 
            8
58
103
 
        case p: ByteVector => 
59
104
 
            value(assetInfo(p)).decimals
60
105
 
        case _ => 
61
106
 
            throw("Match error")
62
107
 
    }
63
108
 
    if (isDefined(getBoolean(this, "status")))
64
109
 
        then throw("already active")
65
110
 
        else {
66
111
 
            let shareTokenName = ("ShareT_" + takeRight(toString(this), 5))
67
112
 
            let digitsInShareToken = ((digitTokenA + digitTokenB) / 2)
68
113
 
            let shareTokenInitialAmount = fraction(pow(tokenReceiveAmountA, digitTokenA, 5, 1, digitTokenA, HALFDOWN), pow(tokenReceiveAmountB, digitTokenB, 5, 1, digitTokenB, HALFDOWN), pow(10, 0, digitsInShareToken, 0, 0, HALFDOWN))
69
114
 
            let shareTokenAssetId = calculateAssetId(Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true))
70
115
 
            let assetIdTokenStringA =             match assetIdReceivedA {
71
116
 
                case t: Unit => 
72
117
 
                    "WAVES"
73
118
 
                case t: ByteVector => 
74
119
 
                    toBase58String(value(assetIdReceivedA))
75
120
 
                case _ => 
76
121
 
                    throw("Match error")
77
122
 
            }
78
123
 
            let assetIdTokenStringB =             match assetIdReceivedB {
79
124
 
                case t: Unit => 
80
125
 
                    "WAVES"
81
126
 
                case t: ByteVector => 
82
127
 
                    toBase58String(value(assetIdReceivedB))
83
128
 
                case _ => 
84
129
 
                    throw("Match error")
85
130
 
            }
86
-
[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), BinaryEntry("share_token_id", shareTokenAssetId), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
131
+
            let invariantCalcualated = invariantCalc(tokenReceiveAmountA, tokenReceiveAmountB)
132
+
[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("invariant", invariantCalcualated), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), StringEntry("share_token_id", toBase58String(shareTokenAssetId)), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
87
133
 
            }
88
134
 
    }
89
135
 
90
136
 
91
137
 
92
138
 
@Callable(contextObj)
93
-
func replenishment () = {
139
+
func replenishmentWithTwoToken () = {
94
140
 
    let paymentA = value(contextObj.payments[0])
95
141
 
    let paymentB = value(contextObj.payments[1])
96
142
 
    let assetIdReceivedA = paymentA.assetId
97
143
 
    let tokenReceiveAmountA = paymentA.amount
98
144
 
    let assetIdReceivedB = paymentB.assetId
99
145
 
    let tokenReceiveAmountB = paymentB.amount
100
-
    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
101
-
    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
146
+
    let invariantCalcualated = invariantCalc((dAppTokensAmountA + tokenReceiveAmountA), (dAppTokensAmountB + tokenReceiveAmountB))
102
147
 
    if (if ((assetIdReceivedA != assetIdTokenA))
103
148
 
        then true
104
149
 
        else (assetIdReceivedB != assetIdTokenB))
105
150
 
        then throw("incorrect assets")
106
151
 
        else {
107
-
            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 100000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
108
-
            if (!(if ((tokenRatio > 99990))
109
-
                then (100010 > tokenRatio)
152
+
            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 1000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
153
+
            if (!(if ((tokenRatio > 990))
154
+
                then (1010 > tokenRatio)
110
155
 
                else false))
111
156
 
                then throw("incorrect assets amount")
112
157
 
                else {
113
158
 
                    let shareTokenToPayAmount = fraction(tokenReceiveAmountA, tokenShareSupply, dAppTokensAmountA)
114
159
 
                    if ((shareTokenToPayAmount == 0))
115
160
 
                        then throw("you try replansish with very small amount")
116
-
                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB))]
161
+
                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB)), IntegerEntry("invariant", invariantCalcualated)]
117
162
 
                    }
118
163
 
            }
119
164
 
    }
120
165
 
121
166
 
122
167
 
123
168
 
@Callable(contextObj)
124
-
func replanishmentWithOneToken () = {
169
+
func replanishmentWithOneToken (tokenAamountWithOldInvariantNewPrice,tokenBamountWithOldInvariantNewPrice) = {
125
170
 
    let payment = value(contextObj.payments[0])
126
171
 
    let assetIdReceived = payment.assetId
127
172
 
    let tokenReceiveAmount = payment.amount
128
173
 
    if ((assetIdReceived == assetIdTokenA))
129
174
 
        then {
130
-
            let newAmountTokenA = (amountTokenA + tokenReceiveAmount)
131
-
            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, amountTokenB)
132
-
            let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
133
-
            let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
134
-
            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
135
-
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA)]
175
+
            let newAmountTokenA = (dAppTokensAmountA + tokenReceiveAmount)
176
+
            let newInvariant = invariantCalc(newAmountTokenA, dAppTokensAmountB)
177
+
            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, dAppTokensAmountB)
178
+
            let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
179
+
            if (if ((isCorrectPriceRation > ratioThresholdMax))
180
+
                then true
181
+
                else (ratioThresholdMin > isCorrectPriceRation))
182
+
                then throw("incorrect function args: price")
183
+
                else {
184
+
                    let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
185
+
                    let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
186
+
                    if (if ((isCorrectInvariantRation > ratioThresholdMax))
187
+
                        then true
188
+
                        else (ratioThresholdMin > isCorrectInvariantRation))
189
+
                        then throw("incorrect function args: invariant")
190
+
                        else {
191
+
                            let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
192
+
                            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
193
+
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA), IntegerEntry("invariant", newInvariant)]
194
+
                            }
195
+
                    }
136
196
 
            }
137
197
 
        else if ((assetIdReceived == assetIdTokenB))
138
198
 
            then {
139
-
                let newAmountTokenB = (amountTokenB + tokenReceiveAmount)
140
-
                let priceAtoBwith8digits = fraction(amountTokenA, scaleValue8, newAmountTokenB)
141
-
                let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
142
-
                let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
143
-
                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
144
-
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB)]
199
+
                let newAmountTokenB = (dAppTokensAmountB + tokenReceiveAmount)
200
+
                let newInvariant = invariantCalc(dAppTokensAmountA, newAmountTokenB)
201
+
                let priceAtoBwith8digits = fraction(dAppTokensAmountA, scaleValue8, newAmountTokenB)
202
+
                let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
203
+
                if (if ((isCorrectPriceRation > ratioThresholdMax))
204
+
                    then true
205
+
                    else (ratioThresholdMin > isCorrectPriceRation))
206
+
                    then throw("incorrect function args: price")
207
+
                    else {
208
+
                        let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
209
+
                        let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
210
+
                        if (if ((isCorrectInvariantRation > ratioThresholdMax))
211
+
                            then true
212
+
                            else (ratioThresholdMin > isCorrectInvariantRation))
213
+
                            then throw("incorrect function args: invariant")
214
+
                            else {
215
+
                                let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
216
+
                                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
217
+
[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB), IntegerEntry("invariant", newInvariant)]
218
+
                                }
219
+
                        }
145
220
 
                }
146
221
 
            else throw("incorrect assets in payment")
147
222
 
    }
148
223
 
149
224
 
150
225
 
151
226
 
@Callable(contextObj)
152
227
 
func withdraw () = {
153
-
    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
154
-
    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
155
228
 
    let payment = value(contextObj.payments[0])
156
229
 
    let assetIdReceived = payment.assetId
157
230
 
    let tokenReceiveAmount = payment.amount
158
231
 
    if ((assetIdTokenShare != assetIdReceived))
159
232
 
        then throw(("you need to attach share token for this dApp " + toBase58String(assetIdTokenShare)))
160
233
 
        else {
161
234
 
            let tokensToPayA = fraction(tokenReceiveAmount, dAppTokensAmountA, tokenShareSupply)
162
235
 
            let tokensToPayB = fraction(tokenReceiveAmount, dAppTokensAmountB, tokenShareSupply)
163
-
[ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), Burn(assetIdTokenShare, tokenReceiveAmount)]
236
+
            let invariantCalcualated = invariantCalc((dAppTokensAmountA - tokensToPayA), (dAppTokensAmountB - tokensToPayB))
237
+
[IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), Burn(assetIdTokenShare, tokenReceiveAmount), IntegerEntry("invariant", invariantCalcualated)]
164
238
 
            }
165
239
 
    }
166
240
 
167
241
 
168
242
 
169
243
 
@Callable(contextObj)
170
-
func exchanger (minTokenRecieve) = {
244
+
func exchanger (amountToSendEstimated,minTokenRecieveAmount) = {
245
+
    let amountTokenB = getIntegerValue(this, "amountTokenB")
246
+
    let amountTokenA = getIntegerValue(this, "amountTokenA")
171
247
 
    let payment = value(contextObj.payments[0])
172
248
 
    let assetIdReceived = payment.assetId
173
249
 
    let tokenReceiveAmount = payment.amount
174
-
    let count = value(getInteger(this, "exchange_count"))
250
+
    let count =     match getInteger(this, "exchange_count") {
251
+
        case i: Int => 
252
+
            (value(getInteger(this, "exchange_count")) + i)
253
+
        case _ => 
254
+
            0
255
+
    }
175
256
 
    if ((assetIdReceived == assetIdTokenB))
176
257
 
        then {
177
-
            let tokenSendAmount = ((fraction(amountTokenA, tokenReceiveAmount, (tokenReceiveAmount + amountTokenB)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
178
-
            if ((minTokenRecieve > tokenSendAmount))
179
-
                then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
180
-
                else {
181
-
                    let assetIdSent = assetIdTokenA
182
-
[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
183
-
                    }
258
+
            let tokenSendAmount = calculateHowManySendTokenA(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
259
+
            let assetIdSent = assetIdTokenA
260
+
[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA - tokenSendAmount), (amountTokenB + tokenReceiveAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
184
261
 
            }
185
262
 
        else if ((assetIdReceived == assetIdTokenA))
186
263
 
            then {
187
-
                let tokenSendAmount = ((fraction(amountTokenB, tokenReceiveAmount, (tokenReceiveAmount + amountTokenA)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
188
-
                if ((minTokenRecieve > tokenSendAmount))
189
-
                    then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
190
-
                    else {
191
-
                        let assetIdSent = assetIdTokenB
192
-
[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
193
-
                        }
264
+
                let tokenSendAmount = calculateHowManySendTokenB(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
265
+
                let assetIdSent = assetIdTokenB
266
+
[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - tokenSendAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
194
267
 
                }
195
268
 
            else throw("Asset is not allowed")
196
269
 
    }
197
270
 
198
271
 

github/deemru/w8io/873ac7e 
48.89 ms ◑